Simple simulated operating system created as part of an operating systems course. Includes multi-process scheduling and memory management with demand paging.
To run the program and enter commands directly:
- Go to the src directory
- make mysh framesize=X varmemsize=Y
- ./mysh
To run the program and use a set of commands stored in a file:
- Go to the src directory
- make mysh framesize=X varmemsize=Y
- ./mysh < FILE
X and Y represent the size of the frame store and the variable store in memory respectively. FILE is the name of the file to run.
| Command | Description |
|---|---|
| help | Displays all the commands |
| quit | Exits the program |
| set VAR VALUE | Creates or updates VAR in memory to VALUE |
| print VAR | Displays the value of VAR if it exists |
| run FILE | Excutes the file FILE |
| echo STRING | Displays STRING |
| echo $VAR | Displays the value of VAR if it exists |
| my_ls | Lists all the files in the current directory |
| my_mkdir DIR | Creates a directory named DIR |
| my_touch FILE | Creates a file named FILE |
| my_cd DIR | Changes the current directory to DIR |
| exec P1 [P2 P3] POL | Executes up to 3 files P1, P2, P3 according to scheduling policy POL |
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